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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file STM8/pal_lld.h
* @brief STM8 GPIO low level driver header.
*
* @addtogroup STM8_PAL
* @{
*/
#ifndef _PAL_LLD_H_
#define _PAL_LLD_H_
#if CH_HAL_USE_PAL || defined(__DOXYGEN__)
/*===========================================================================*/
/* Unsupported modes and specific modes */
/*===========================================================================*/
/*===========================================================================*/
/* I/O Ports Types and constants. */
/*===========================================================================*/
typedef struct {
volatile uint8_t ODR;
volatile uint8_t IDR;
volatile uint8_t DDR;
volatile uint8_t CR1;
volatile uint8_t CR2;
} gpio_t;
/**
* @brief Generic I/O ports static initializer.
* @details An instance of this structure must be passed to @p palInit() at
* system startup time in order to initialized the digital I/O
* subsystem. This represents only the initial setup, specific pads
* or whole ports can be reprogrammed at later time.
*/
typedef struct {
gpio_t P[9];
} STM8GPIOConfig;
/**
* @brief Width, in bits, of an I/O port.
*/
#define PAL_IOPORTS_WIDTH 32
/**
* @brief Whole port mask.
* @brief This macro specifies all the valid bits into a port.
*/
#define PAL_WHOLE_PORT ((ioportmask_t)0xFFFFFFFF)
/**
* @brief Digital I/O port sized unsigned type.
*/
typedef uint32_t ioportmask_t;
/**
* @brief Port Identifier.
*/
typedef gpio_t *ioportid_t;
/*===========================================================================*/
/* I/O Ports Identifiers. */
/*===========================================================================*/
/**
* @brief GPIO ports as a whole.
*/
#define IOPORTS ((STM8GPIOConfig *)0x5000)
/**
* @brief GPIO port A identifier.
*/
#define IOPORT1 ((gpio_t *)0x5000)
/**
* @brief GPIO port B identifier.
*/
#define IOPORT2 ((gpio_t *)0x5005)
/**
* @brief GPIO port C identifier.
*/
#define IOPORT3 ((gpio_t *)0x500A)
/**
* @brief GPIO port D identifier.
*/
#define IOPORT4 ((gpio_t *)0x500F)
/**
* @brief GPIO port E identifier.
*/
#define IOPORT5 ((gpio_t *)0x5014)
/**
* @brief GPIO port F identifier.
*/
#define IOPORT6 ((gpio_t *)0x5019)
/**
* @brief GPIO port G identifier.
*/
#define IOPORT7 ((gpio_t *)0x501E)
/**
* @brief GPIO port H identifier.
*/
#define IOPORT8 ((gpio_t *)0x5023)
/**
* @brief GPIO port I identifier.
*/
#define IOPORT9 ((gpio_t *)0x5028)
/*===========================================================================*/
/* Implementation, some of the following macros could be implemented as */
/* functions, if so please put them in pal_lld.c. */
/*===========================================================================*/
/**
* @brief Low level PAL subsystem initialization.
*
* @param[in] config architecture-dependent ports configuration
*/
#define pal_lld_init(config) *IOPORTS = *(config)
/**
* @brief Reads the physical I/O port states.
* @note This function is not meant to be invoked directly by the
* application code.
*
* @param[in] port port identifier
* @return The port bits.
*/
#define pal_lld_readport(port) ((port)->IDR)
/**
* @brief Reads the output latch.
* @details The purpose of this function is to read back the latched output
* value.
* @note This function is not meant to be invoked directly by the
* application code.
*
* @param[in] port port identifier
* @return The latched logical states.
*/
#define pal_lld_readlatch(port) ((port)->ODR)
/**
* @brief Writes a bits mask on a I/O port.
* @note This function is not meant to be invoked directly by the
* application code.
*
* @param[in] port port identifier
* @param[in] bits bits to be written on the specified port
*/
#define pal_lld_writeport(port, bits) ((port)->ODR = (bits))
/**
* @brief Pads group mode setup.
* @details This function programs a pads group belonging to the same port
* with the specified mode.
* @note This function is not meant to be invoked directly by the
* application code.
* @note Programming an unknown or unsupported mode is silently ignored.
*
* @param[in] port port identifier
* @param[in] mask group mask
* @param[in] mode group mode
*/
#define pal_lld_setgroupmode(port, mask, mode) ((void)(mode))
extern const STM8GPIOConfig pal_default_config;
#endif /* CH_HAL_USE_PAL */
#endif /* _PAL_LLD_H_ */
/** @} */
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